Product specification1991 Feb 08
IC05 Data Handbook
Page 2
Philips SemiconductorsProduct specification
Dual J-K
positive edge triggered flip-flop
with set and reset
DESCRIPTION
The 74ALS109A is a dual positive edge-triggered JK-type flip-flop
featuring individual J, K
complementary outputs. Set (SD) and reset (RD) are asynchronous
active-Low inputs and operate independently of the clock (CP) input.
The J and K
are edge-triggered inputs which control the state
changes of the flip-flops as described in the function table. Clock
triggering occurs at a voltage level and is not directly related to the
transition time of the positive-going pulse. The J and K
be stable just one setup time prior to the Low-to-High transition of
the clock for predictable operation. The JK
as a D flip-flop by tying J and K
input is level sensitive, the positive transition of the clock pulse
between the 0.8V and 2.0V levels should be equal to or less than
the clock to output delay time for reliable operation.
H = High voltage level
h = High state must be present one setup time prior to
Low-to-High clock transition
L = Low voltage level
l= Low state must be present one setup time prior to
Low-to-High clock transition
q = Lower case indicate the state of the referenced output prior to
the Low-to-High clock transition
X = Don’t care
↑ = Low-to-High clock transition
* = The output levels in this configuration are not guaranteed to
meet the minimum levels for V
maximum. Furthermore, this configuration is nonstable;
V
IN
that is, it will not remain when either set or reset returns to its
if the set and reset are near
OH
inactive (High) level.
OPERATING
MODE
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
amb
T
stg
Supply voltage
Input voltage –0.5 to +7.0V
Input current
Voltage applied to output in high output state–0.5 to V
Current applied to output in Low output state16mA
Operating free-air temperature range0 to +70°C
Storage temperature range–65 to +150°C
Dual J-K positive edge-triggered flip-flop
with set and reset
SO16:plastic small outline package; 16 leads; body width 3.9 mmSOT109-1
74ALS109A
1991 Feb 08
8
Page 9
Philips SemiconductorsProduct specification
Dual J-K positive edge-triggered flip-flop
with set and reset
DEFINITIONS
74ALS109A
Data Sheet IdentificationProduct StatusDefinition
Objective Specification
Preliminary Specification
Product Specification
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Formative or in Design
Preproduction Product
Full Production
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
1991 Feb 08
9
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